Rotary well drill



Jan. 5 1926. 1,568,055

N. s. BURTON ROTARY WELL DRILL Filed Feb. 19, 1925 2 Sheets-Sheet 1 gig. FE

H a a [Ill/11 25... r/////// Jan. 5 1926. 1,568,055

N. s. BURTON ROTARY WELL DRILL Filed Feb. 19, 1925 2 SheetsSheet 2 \n E a Snow/Tot UNITE Patented .lan. 5, 1926.

EMERSON S. BURTON, 0F ARDMOBE, OKLAHOMA,

ROTARY WELL DRILL.

application filed February 19, 1925. Serial No. 10,224.

To all whom it may concern:

Be it known that l, NnLsoN S. BURTON,

citizen of the United States: residing at Ardmore, in the county of Carter and State of Oklahoma, have invented certain new and useful Improvements in Rotary Well Drills,

of which the following is a specification.

This invention relates to rotary well-drilling apparatus and more particularly to that type of drilling apparatus in which a drill of less size than the bore desired is employed, and the drill pipe has arranged thereon, above the drill-bit, a reamer for enlarging the bore. This type of drilling apparatus is employed in dificult formations for the reason that it is particularly adapted for the production of straight bores therein.

An important object of the invention, in the form thereof embodying a set of removable reamer-blades, is to provide an improved mounting for such blades; and to provide a bit-carrying pipe memb er having a threaded in engaging a threaded recess interiorly o? the reamer-body, at a point about midway of the length thereof.

Another object is to provide a modified construction wherein the bit-carryingpipemember and the reamer-body carrymg the removable reamer-blades are integral, thus simplifying the construction.

Other objects will appear as the specification roceeds-and the nature of the invention is more fully disclosed.

The invention, in its various forms, is disclosed in the accompanying drawings. The different views thereof may be briefly described as follows:

Figure 1 is a view, in side elevation, of the drilling assembly constructed in accordance with one form of my invention;

Figure 2 is a view in central longitudinal section thereof;

Figure 3 is a top plan view thereof;

Figure 4 is a cross section taken on the plane of the section line 44, Fig.

Figure 5 is a view in side elevation, showing a slightly modified form of construction' Figure 6 is a central longitudinal section through the form shown in Fig. 5

Figure 7 is a fragmentary central longitudinal sectional view of a still further modified form.

Referring, now, in detail to the drawings and, first, to Figs. 1 to 4 thereof:

1 indicates a reamer'body, which is, in this instance, tubular, providing the bore 2 therethrough, and is exteriorly formed with a number of longitudinally extending grooves 3 (two thereof being shown in the drawings), which may be of tapering con-' tour longitudinally, as shown in Fig. 1, for the reception of the similarly tapering portionsd, 4 of the shanks of reamer-blades 5, 5, said tapering portions having shoulders 5 5 seating under the lower ends of the reamer-body 1, as shown in Figs. 1 and 2.

The reamer-body lis provided, at its upper end, with a tapering, threaded pin or nipple 6 for engagement with the lower end of a line of drill-pipe. At its other end, the reamer-body is hollowed out longitudinally, roviding a longitudinally-extendin chamer 7 having, at its upper end, the t readed socket 8, to be engaged by the upper threaded end 9 of a pipe-member 10 adapted to carr a fish-tail drill-bit 11. As shown, the soc et 8 is disposed interiorly of the reamer-body 1, preferably at a point midway of the length thereof.

The reamer-body 1 is provided, adjacent the grooves 3, with two pairs of notches 12, the notches of each pair being oppositely dis osed, as shown in Figs. 1 and 4, and which notches receive the heads 13 and" nuts 14: of bolts 15, which pass through the inner end walls of said notches and transversely through the tapering portions 4 of the shanks of the reamer-blades 5. By the means justdescribed, the reamer-blades are secured to reamer-body and held against accidental displacement. Additional means are, however, provided for securing said reamer-blades removably in position, and these supplemental securing means are advantageous in case the nuts 14 work loose and fall off the bolts 15, thus ermitting the latter to fall out. The supp emental securing means will now be described. When in operative position, the upper ends of the tapering portions 4 of the shanks of the reamer-blades the.shanks 0 the reamer-blades.

' reamer-blades 5, 5 are removable, and con-- 5, 5 roject somewhat above the annular shoulder 16 toward the upper end of the reamer-body, and these projecting extrem ities of said tapering portions of the shanks of the reamer-blades are provided with oppositely disposed notches 17, 17, toreceive the inner ends of latches 18, 18, which are slid into operative position in guiding grooves 19 in said shoulder 16. Screws 20 secure the latches in their operative posistructed similarly to those shown in Figs.

1 to 4, and are similarly held in position.

In the form of device shown in Fig. 7, the

bit-carrying pipe-member 10 is integral with the lower end of the drill-pipe 21, the

latter, at its point of union with the former, being provided with the threaded pin, of lesser diameter than the. drill-pipe 21, so as to form at the inner end of said pina shoulder 23, against which seats a washer or collar 24 provided with radial ports 25, 25

I as

nally-extending central port, 27 of the drill what I c aim as new and desire to'secure by communicating with radial ports 26, 26 in the drill-pipe 21, the latter ports communieating, in turn, with the bore, or longitudipipe 21 and bit-carrying pipe-member 10" Branch ports 28, 28 in the collar 24 provide communication between the ports 25, 25 and longitudinally-extending ports 29, 29- in the sleeve-member 32 having the internallythreaded upper ortion 30 adapted to screw upon the three ed pin 22. The ports 29 dlscharge in front of the reamer-blades (not shown) which are removably carried by the sleeve-member 32 in the manner shown in Fig. 1 (namely, by means of the bolts 15 shown in Fig. 1). The ports described and shown permit water under pressure to pass down through the deviceand clear the bit and reamers of sediment.

Havin thus fully described my invention,

Letters-Patent of the United States is:

1. The combination with a'reamer-body having an internal, threaded socket at a point midway of the length thereof, a bitcarrying pipe-member having a threaded end enga'gm said socket, said reamer-body being provided exteriorly wtih longitudinally extending grooves, reamer-blades having shanks dis osed in said grooves, and means for ho ding said shanks in said grooves against accidental displacement.

2. The combination with a reamer-body having an internal, threaded socket at a point'midway of the length thereof, a bitcarrying ipe-member having a threaded. end engaging said socket, said reamer-body being provided exteriorly with longitudishanks for holding the latter against accidental displacement.

4. The combination with a reamer-body having an internal, threaded socket at a point midway of the len h thereof, a bitcarrying pipe-member having a threaded end engaging said socket, said reamer-body being provided exteriorly with longitudinally-extending grooves, reamer-blades having shanks seated in said grooves, said shanks being notched toward their upper ends, and latches slidable upon said reamer-body and engageable with said notches.

5. The combination with a reamer-body having an interial, threaded socket at a point midway of the length thereof, a bit-carrying pipe-member having a threaded end engaging said socket, said reamer-body being provided exteriorly with longitudinally-extending grooves, reamer-blades having shanks seated in said grooves, said shanks being notched toward their up r ends, latches slidable upon said reamerody and en a eable with said notches, and means for o ding said latches in operative position.

6. The combination with a reamer-body having an internal, threaded socket at a point midway of the length thereof, a bitcarrying pipe-member having a threaded end engaging said socket, said reamer-body being provided exteriorly with longitudinally-extending grooves, reamer-blades having shanks seated in said grooves, bolts passing throu h said reamer-body and said shanks for ho ding the latter against accidental displacement, said shanks being notched toward their upper ends, and latches slidable upon said reamer-body and engageable with said notches.

7. The combination with a reamer-body having an internal, threaded socket at a point midway of the length thereof, said reamer-body being provided exteriorly with lon itudinally-extending grooves, reamerbla es having shanks disposed in said grooves, and means for holding said shanks in said grooves against accidental displace ment.

8. The combination with a reamer-body provided externally with longitudinally-ex- 5 tending grooves, of reamer-blades having shanks removably seated in said grooves, said shanks being notched toward their upper ends, and latches slidable upon said reamer-body and engageable with said notches.

In testimony whereof, I hereunto afiix my signature.

NELSON S. BURTON. 

